Nowadays, the valve market is a mixed bag. The unscrupulous traders have to take profits and counterfeit refurbished valves and shoddy, which poses a great safety risk to the installation project. Therefore, it is very necessary to introduce the inspection of the identification of refurbished valves. At present, there are several methods for the counterfeiting of valves in the distributors of the valve market: 1, using iron, carbon steel valves and repair waste valves shoddy. 2. Put the valve products of the local small factories into the registered trademarks of the big brand manufacturers and make them real. 3, counterfeiting famous manufacturers of users, distributors, agents, selling sheep. 4, the production of seals, the ordinary level valve into a D-class valve, gaining profits. Valve refurbishment is extremely harmful, not only disturbs the market order, but also causes great hidden dangers to the construction quality, and it is extremely harmful to the society. We only know that its means of counterfeiting is not enough. We must also keep our eyes open. Those foxes that we can no longer fight against are not good hunters. Here I will tell you how to identify the valve for renovation. 1, look at the color, refurbished valve in the color with the genuine product is very different, these low-cost materials in the appearance of color, mostly white, which has a more obvious difference with the green valve steel. 2, look at the seal, the original valve seal is not in the valve before the heat treatment, it was pressed on the use of professional stamping technology, so the font is clear. The refurbished valve is uneven and confused. 3, look at the oil traces, counterfeit refurbished valves In order to achieve the purpose of rust, it will add thick oil on the valve surface, which will reduce the valve body itself finish. At or equal to DN80, valves with too small specifications are not available. 5, look at the gate, refurbished valve gates are generally polished marks and rust. 6, the upper end of the valve stem nut and identification plate removed to see the inside of the lock nut material, genuine material is brass, otherwise it is counterfeit. Hope to provide some help to the friends engaged in engineering installation and procurement, together resist the renovation of counterfeit valves to ensure the construction quality is safe and effective. Water Pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid, mainly for transporting liquids including water, oil, acid and alkali, emulsion, suspoemulsion and liquid metal. Water Pumps Water Pumps,Self Priming Flood Control Pumps,Horizontal Chemical Process Pump,Self Suction Sewage Pump Sichuan Zigong Industrial Pump Co.,Ltd. , https://www.zgpump-global.com
Liquids, gas mixtures, and liquids containing suspended solids can also be delivered. The technical parameters of the pump performance include flow, suction stroke, lift, shaft power, water power, efficiency, etc.; according to different working principles, it can be divided into volume pump, vane pump and other types. The volumetric pump uses its change in the volume of the working chamber to transfer energy. The vane pump uses the interaction of the rotating blades and water to transfer energy. There are centrifugal pump, axial Flow Pump and mixed flow pump.